Added local_addr and local_port support.

Thanks github user c00ler-! This change was based on
https://github.com/c00ler-/HTTP-Async/commit/69e804612d29f9c1839037f63f2a3682dab047d4
Standardised test names (_'s become -'s)
Added THANKS to github user c00ler-
Version bump (0.17) and updated CHANGES file.